163381011641 has 4 divisors (see below), whose sum is σ = 166463672292. Its totient is φ = 160298350992.

The previous prime is 163381011617. The next prime is 163381011659. The reversal of 163381011641 is 146110183361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69129555625 + 94251456016 = 262925^2 + 307004^2 .

It is a cyclic number.

It is not a de Polignac number, because 163381011641 - 2¹⁴ = 163380995257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163381011041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1541330246 + ... + 1541330351.

It is an arithmetic number, because the mean of its divisors is an integer number (41615918073).

Almost surely, 2^163381011641 is an apocalyptic number.

It is an amenable number.

163381011641 is a deficient number, since it is larger than the sum of its proper divisors (3082660651).

163381011641 is an equidigital number, since it uses as much as digits as its factorization.

163381011641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082660650.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 163381011641 in words is "one hundred sixty-three billion, three hundred eighty-one million, eleven thousand, six hundred forty-one".